diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictLangCache.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictLangCache.java
index 94710aca3..1f0f8497c 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictLangCache.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictLangCache.java
@@ -34,6 +34,7 @@ import org.eehouse.android.xw4.jni.JNIUtilsImpl;
 import org.eehouse.android.xw4.jni.XwJNI;
 import org.eehouse.android.xw4.loc.LocUtils;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
@@ -299,6 +300,12 @@ public class DictLangCache {
         return result;
     }
 
+    public static long getFileLen( Context context, DictAndLoc dal )
+    {
+        File path = dal.getPath( context );
+        return path.length();
+    }
+
     public static int getDictLangCode( Context context, String dict )
     {
         return getInfo( context, dict ).langCode;
diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictUtils.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictUtils.java
index 5f6bc27bd..ed7130bf2 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictUtils.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DictUtils.java
@@ -117,6 +117,12 @@ public class DictUtils {
         public String name;
         public DictLoc loc;
 
+        public File getPath( Context context )
+        {
+            File path = getDictFile( context, addDictExtn(name), loc );
+            return path;
+        }
+
         @Override
         public boolean equals( Object obj )
         {
diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/UpdateCheckReceiver.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/UpdateCheckReceiver.java
index 9473b124e..8ade9a7eb 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/UpdateCheckReceiver.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/UpdateCheckReceiver.java
@@ -62,6 +62,7 @@ public class UpdateCheckReceiver extends BroadcastReceiver {
     private static final String k_LANG = "lang";
     private static final String k_MD5SUM = "md5sum";
     private static final String k_INDEX = "index";
+    private static final String k_LEN = "len";
     private static final String k_URL = "url";
     private static final String k_DEVID = "did";
     private static final String k_DEBUG = "dbg";
@@ -215,11 +216,13 @@ public class UpdateCheckReceiver extends BroadcastReceiver {
         int lang = DictLangCache.getDictLangCode( context, dal );
         String langStr = DictLangCache.getLangName( context, lang );
         String sum = DictLangCache.getDictMD5Sum( context, dal.name );
+        long len = DictLangCache.getFileLen( context, dal );
         try {
             params.put( k_NAME, dal.name );
             params.put( k_LANG, langStr );
             params.put( k_MD5SUM, sum );
             params.put( k_INDEX, index );
+            params.put( k_LEN, len );
         } catch( org.json.JSONException jse ) {
             Log.ex( TAG, jse );
         }